The Edelbrock Performer RPM FE intake manifold is built for high-performance street Ford FE V8s—390–406–410–427–428 c.i.d.—and uses a dual-plane constant cross-sectional area design to deliver strong low- and mid-range acceleration plus optimized runner paths for top-end horsepower. It includes provision for a PCV or breather flange at the rear and omits an exhaust crossover passage.
Edelbrock Performer RPM 427 Manifold